中文摘要：

为了结合陶瓷的性能优势和搪瓷的工艺优势,利用先进的等离子喷涂工艺制备了臭氧发生器介质涂层。对涂层进行了微观结构分析和介电性能测试,并设计制作了管式臭氧发生器样机,研究了不同涂层对臭氧产生性能的影响。研究结果显示等离子喷涂涂层满足臭氧发生器的设计要求,且可以获得更高的相对介电常数εr,其中氧化铝（Al2O3）加氧化钛（TiO2）的双涂层方案具有最佳的臭氧生成性能。等离子喷涂工艺具有很强的灵活性,可替代玻璃和搪瓷成为臭氧发生器新的介质层负载工艺,具有良好的应用前景。

英文摘要：

In order to obtain the advantages of both ceramic performance and enamel technique,we prepared dielectric coatings for the ozonizer by the advanced plasma spraying process,and analyzed and tested the microstructure and dielectric properties of the coatings.Moreover,we developed a tube ozonizer prototype on the basis of the plasma sprayed coatings,and studied the performance of different coatings in ozone production.The study results show that the plasma sprayed coatings meet the requirements of the ozonizer with higher dielectric constants,and the double Al2O3＋TiO2 coatings have the best performance in ozone formation.It is concluded that plasma spraying,as a flexible process,can be substituted for glass and enamel and becomes the new dielectric layer deposition process for ozone generators,which is quite promising in application prospect.